The document outlines research-based principles of multimedia design, including reducing extraneous processing by avoiding overloading learners with unimportant information, managing essential processing by not assuming learners have prior knowledge, and fostering generative processing by involving learners and motivating them to engage with the material. It provides examples and further information on principles like coherence, signaling, redundancy, contiguity, segmenting, pre-training, modality, personalization, voice, and image.